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Bioactive compounds and antioxidant activity of papaya inoculated with Colletotrichum gloeosporioides as affected by hot water–calcium chloride
Author(s) -
AyónReyna Lidia Elena,
DelgadoVargas Francisco,
SolteroSánchez Carlos Andrés,
LópezAngulo Gabriela,
LópezLópez Martha Edith,
LópezVelázquez Jordi Gerardo,
ParraUnda Jesús Ricardo,
VegaGarcía Misael Odín
Publication year - 2018
Publication title -
journal of food biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 47
eISSN - 1745-4514
pISSN - 0145-8884
DOI - 10.1111/jfbc.12608
Subject(s) - postharvest , ascorbic acid , antioxidant , colletotrichum gloeosporioides , carica , chemistry , fungicide , calcium , inoculation , food science , bioactive compound , horticulture , biology , biochemistry , organic chemistry
The application of technologies to reduce papaya ( Carica papaya L.) anthracnose, a disease caused by the fungus Colletotrichum gloeosporioides , most of the time results in a loss of nutrients and other bioactive compounds. This study was performed to determine the effect of hot water (HW; 48°C/20 min), calcium chloride (Ca; 1%/20 min), and their combination (HW‐Ca) in bioactive compounds and antioxidant activity of papaya inoculated with Colletotrichum gloeosporioides stored during 20 days at 12°C. HW‐Ca treated fruits showed higher ascorbic acid, phenolics content, and antioxidant activity than untreated and HW and Ca treated fruit, which correlated with the contents of ascorbic acid, phenolics, and β‐cryptoxanthin. Also, HW‐Ca treatment resulted in fruits showing lower decay area, greater firmness and color retention. The results suggest that HW‐Ca treatment could be used to reach higher antioxidant activity values and to preserve the postharvest quality parameters, whereas the development of anthracnose symptoms was delayed. Practical applications Papaya infected by Colletotrichum gloeosporioides and treated with hot water (HW) in combination with calcium chloride (Ca) had a good firmness, color retention, and higher antioxidant activity and content of ascorbic acid and phenolics, while the development of anthracnose symptoms was delayed. In this sense, the proposed HW‐Ca treatment of papaya is a strategy to protect against Colletotrichum gloeosporioides and to obtain fruits with good quality, resulting in an interesting postharvest alternative to the application of fungicides.

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